function GetCookieValue(cookieName) 
{
  var cookiename = cookieName + '=';
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) 
  {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(cookiename) == 0) return c.substring(cookiename.length,c.length);
  }
  return null;
}

function CreateCookie(name,value,days) 
{
  if (days) 
  {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function DeleteCookie(name, path, domain) 
{
if ( GetCookieValue( name ) ) document.cookie = name + "=" + ( ( path ) ? ";path=" + path : "") +( ( domain ) ? ";domain=" + domain : "" ) +";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

function GetQueryStringItem(name)
{
	name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");  
	var regexS = "[\\?&]" + name + "=([^&#]*)";  
	var regex = new RegExp( regexS );  
	var results = regex.exec( window.location.href );  
	results = results	
	if( results == null ) 
	return "";  
	else 
	 return results[1];
}